Can a baker cyst untreated cause a meniscus tear knee injury twisted and stumbled

No. Bakers cyst usually secondary to meniscus tear or arthritis. If you fell (regardless of reason), then you can tear your meniscus.
Baker's cyst. It's usually the other way around. A meniscal tear can cause a baker's cyst. Fluid produced by an angry knee, gets forced out to the back of the knee, and produces the baker's cyst. If you undergo surgery for the meniscal tear, the cyst should go away.
It . It is actually the other way around. A meniscal tear causes the baker's cyst. The collagen fibers of the meniscus are arranged in a parallel arrangement and a tear creates a communication with the capsule and serves as a one way valve to create the cyst.